TW201529249A - Fastener driving tool - Google Patents

Abstract

The invention provides a fastener driving tool which achieves driving stability and alleviates the kinking generation frequency by controlling the gesture of a fastener in an injection passage. A fastener driving tool injects a fastener from an injection passage (13b) formed in a leading end of a tool main body (11). The injection passage (13b) includes therein a guide portion (14b) formed along a driving direction of the fastener (41) for guiding the fastener (41). The guide portion (14b) is formed by providing contours having mutually different distances from a center of the injection passage (13b) in a cross-section of the injection passage.

Description

Fastener tapping tool

The present invention relates to a fastener tapping tool.

In the previous fastener tapping tool, when a fastener having a small head diameter and a small diameter and a short length is used, the inclination angle of the fastener when the tapping in the injection path becomes large, and the frequency of bending occurs The tendency to become more.

In order to suppress the occurrence of such a knocking failure (bending), the contact nose is used previously (see, for example, Patent Document 1). The contact nose is attached to the tip of the contact arm of the fastener hitting tool which constitutes the safety device, and the contact nose is moved to the surface of the hit material by the pressure, the contact arm moves upward, and the tapping mechanism becomes driven. State. The inner diameter of the contact nose is made substantially equal to the inner diameter of the nose portion, whereby the inclination of the fastener at the time of tapping can be suppressed. Moreover, the contact nose is formed such that when the fastener is struck, it protrudes more than the nose to contact the hitter, and the fastener is knocked out from the tip of the tip, so the reaction force or adjustment by the tapping The tapping depth and the like can maintain the contact with the member even if the nose is in a floating state, so that the posture of the fastener can be guided until the end of the tapping. That is, even when a fastener having a small head diameter and a small diameter and a short length is used, the contact nose suppresses the inclination of the fastener, so that the frequency of the bending can be suppressed.

[First technical literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2007-203419

Such a fastener percussion tool is often used for a plurality of types of fasteners having different head diameters and wire diameters. Therefore, even if the contact nose structure is used, the inner diameter of the contact nose must match the maximum diameter of the fastener that can be used. When a fastener having a small head diameter and a small diameter is used, the inclination of the fastener contacting the nose cannot be completely suppressed. . Therefore, there is a buckle in which the fastener is obliquely emitted and bent.

In particular, in a tapping tool having a fastener supply mechanism that supplies a link in which the fastener is attached to the nose, the fastener is knocked out in a state in which the fastener is not sufficiently guided, and is knocked out. The posture of the fastener is not necessarily the same. Therefore, even if the contact nose structure is used, the inclination of the fastener cannot be completely suppressed.

Here, the subject of the present invention is to provide a fastener that can be stably struck by controlling the posture of the fastener, and can also reduce the bent fastener hitting tool.

The present invention has been developed to solve the above problems, and it is characterized as follows.

(Application No. 1 in the scope of patent application)

The invention described in claim 1 is characterized by the following points.

That is, the fastener percussion tool according to the first aspect of the patent application is a fastener percussion tool that is ejected from the ejection path of the tip end of the tool body, and is characterized in that: in the inside of the ejection path a guiding portion for inducing the fastener, which is disposed along a knocking direction of the fastener, wherein the guiding portion is disposed in a cross-sectional shape of the injection path, and the distance from the center of the ejection path is not Same as the outer contour.

(Applicant's patent scope item 2)

The invention described in claim 1 is in addition to the features of the invention described in the first aspect of the above-mentioned patent application, and the following points are taken as features.

That is, the guide portion is formed on the inner surface on the opposite side from the grip.

(Article 3 of the scope of patent application)

The invention described in claim 3 is in addition to the feature points of the invention described in the first or second aspect of the above-mentioned patent application, and the following points are taken as features.

That is, the aforementioned guiding portion is formed by the guiding groove.

(Article 4 of the scope of patent application)

The invention described in claim 4 is in addition to the features of the invention described in claim 3 of the above-mentioned patent application, and the following points are taken as features.

That is, the guiding groove has a structure width smaller than the diameter of the head of the fastener.

(Applicant's patent scope 5)

The invention described in claim 5 is in addition to the feature points of the invention described in the third or fourth aspect of the above-mentioned patent application, and the following points are taken as features.

That is, the aforementioned guiding groove is formed to be shallower than the diameter of the shaft portion of the fastener.

(Scope 6 of the patent application)

The invention described in claim 6 is in the scope of the above-mentioned patent application. In addition to the feature points of the invention described in any one of the items 3 to 5, the following points are taken as features.

That is, it has a second groove that is shallower than the aforementioned guide groove.

(Applicant's scope 7)

The invention described in claim 7 is in addition to the features of the invention described in any one of the first to sixth aspects of the invention, and the following points are taken as features.

That is, a supply path for supplying the fastener is connected to the injection path, and the supply path is arranged to be offset with respect to the center position of the emission path.

(Article 8 of the scope of patent application)

The invention described in the eighth aspect of the invention is in addition to the features of the invention described in any one of the first to seventh aspects of the invention, and the following points are taken as features.

That is, the guide portion is formed closer to the tip end than the tip end of the fastener supplied to the ejection path.

(Article 9 of the scope of patent application)

The invention described in claim 9 is in addition to the features of the invention described in any one of the first to eighth aspects of the invention, and the following points are taken as features.

That is, a supply path for supplying the fastener is connected to the injection path, and the guide portion is formed closer to the tip end than the supply path.

According to the invention of claim 1, in the inside of the injection path, the guide portion for inducing the fastener is disposed along the knocking direction of the fastener, and the guide portion is provided at In the cross-sectional shape of the exit path, the distance from the center of the exit path is different from the outline, so that the toe of the fastener that is emitted from the nose is induced by the guide portion, whereby the fastener in the exit path The posture is limited. Thereby, the tapping posture of the fastener can be stabilized, so that the frequency of occurrence of knocking failure can be reduced.

Moreover, by inducing the toe of the fastener, the relative position of the toe of the fastener relative to the ejection opening is restricted, and the position of the fastener contacting the struck material is restricted, so that it is also easier to align the knock The effect of hitting the position.

Further, the invention described in claim 2 is as described above, and the guide portion is formed on the inner surface on the opposite side from the grip. If the guiding groove is set to such a position, the toe of the fastener that enters the guiding groove is viewed from the grip and guided in the opposite direction. Moreover, when the reaction force is knocked out, the self-grip is viewed, and when the opposite side of the fastener tapping tool is tilted to the pick-up direction, the axis of the fastener is nearly perpendicular with respect to the struck surface, so The inclination of the fastener is absorbed to strike the fastener in a substantially vertical direction.

Further, the invention of claim 3 is as described above, wherein the guide portion is formed by the guide groove, so that the toe of the fastener in the injection path can be surely captured, and the buckle in the injection path can be stabilized. The posture of the piece.

Moreover, the invention described in claim 4 is as described above, wherein the guiding groove is formed to have a smaller width than the diameter of the head of the fastener, so that the head of the fastener does not enter the guide. Groove, therefore, the exit path can be used The inner circumferential surface (the portion other than the guiding groove) does guide the head of the fastener and stabilizes the posture of the fastener in the ejection path.

Further, the invention described in claim 5 is as described above, wherein the guiding groove is formed to be shallower than the diameter of the shaft portion of the fastener, so that the shaft portion of the fastener does not excessively enter the guide. The groove does not cause a problem that the tapping position of the fastener is offset due to the guiding groove.

Further, the invention described in claim 6 is as described above, and has a second groove which is shallower than the guide groove, so that the second groove can suppress the lateral direction of the toe of the fastener. When moving, the tip of the fastener can be captured by the guiding groove, or the second groove can be used to discharge the debris in the injection path.

Further, in the invention according to claim 7, the supply path for supplying the fastener is connected to the injection path, and the supply path is arranged to be offset with respect to the center position of the emission path. . In this way, when the supply path is offset, the toe of the fastener easily contacts the inner surface of the injection path, and sometimes the toe of the fastener is knocked out along the inner surface of the injection path. However, according to the present invention, by providing the guiding portion, the toe of the fastener can be smoothly guided along the tapping, so that the position of the toe and the posture of the fastener can be stabilized, and the occurrence of knocking can be reduced. .

Further, in the invention according to the eighth aspect of the invention, as described above, the guide portion is formed closer to the tip end of the fastener that is supplied to the injection path, and is closer to the vicinity of the tip end of the tool body. The tip of the knocked fastener can be guided by the guide.

Further, the invention according to claim 9 is as described above, wherein the guide portion is formed closer to the tip end than the supply path, so The guiding portion does guide the toe of the button that is knocked out.

10‧‧‧fastener tapping tool

11‧‧‧Tool body

12‧‧‧ body shell

13‧‧‧Nose

13a‧‧‧Supply path

13b‧‧‧ shooting path

14‧‧‧Contact nose

14a‧‧‧ inner week

14b‧‧‧ guiding groove (guide)

14c‧‧‧Importing Department

14d‧‧‧Linear Department

15‧‧‧ shots

16‧‧‧ Holding the housing

17‧‧‧ trigger

18‧‧‧End cover

19‧‧‧ nails

20‧‧‧Feed components

21‧‧‧ Driver

30‧‧‧Fixed guide wall

30a‧‧ ‧ window hole

31‧‧‧door components

32‧‧‧nail body supply mechanism

33‧‧‧ piston rod

34‧‧‧Feed claws

40‧‧‧Knocked timber

41‧‧‧fasteners

41a‧‧‧ head

41b‧‧‧Axis

100‧‧‧Contact members

Figure 1 is a side view of a fastener tapping tool.

Figure 2 is a cross-sectional view of the fastener tapping tool viewed from the side.

Figure 3 is a partially enlarged cross-sectional view of the vicinity of the nose viewed from the side.

Figure 4 is a partially enlarged cross-sectional view of the tip of the contact nose viewed from the rear (holding side).

Fig. 5 is a cross-sectional view showing the state in which the fastener is in contact with the inside of the nose and is guided by the guiding groove.

Fig. 6 is a view showing a state in which the fastener is knocked out; (a) to (e) are partial enlarged sectional views near the nose from the side; (f) ~ (i) are from the rear (holding side) ) View a partially enlarged cross-section of the vicinity of the nose.

Fig. 7 is a view showing a modification of the contact nose.

Fig. 8 is a cross-sectional view showing a state in which the fastener is induced by the guide groove in the inside of the contact nose in the modified example after the inclined guide groove.

Fig. 9 is a view showing a state in which the fastener is knocked out in the previous contact nose; (a) to (e) are partial enlarged sectional views of the vicinity of the nose from the side; (f) ~ (i) A partially enlarged cross-sectional view of the vicinity of the nose is viewed from the rear (holding side).

Figure 10 is a view for explaining the structure of the contact nose; (a) and (b) are partial enlarged sectional views of the vicinity of the nose having the contact nose structure viewed from the side; (c) and (d) are from the side A partial enlarged cross-sectional view of the vicinity of the nose without the contact nose configuration is viewed.

Figure 11 is a view showing a fastener of a modification in which a guide portion is provided on the nose from the side. A cross-section of the tapping tool.

Fig. 12 is a partially enlarged side view of the vicinity of the nose of the fastener knocking tool of the modified example in which the nose is provided with the guiding portion; (b) X-X sectional view.

Fig. 13 is a partially enlarged side view of the vicinity of the nose of the fastener knocking tool of the modified example in which the nose portion is provided with the guiding portion; (b) a Y-Y sectional view.

Embodiments of the present invention will be described with reference to the drawings.

The fastener tapping tool 10 of the present embodiment is a pneumatic type tapping tool that uses compressed air to strike the fastener 41. As shown in FIG. 1, the tool body 11 has a nose portion 13 and a nail file. 19, in the side of the nose 13, is connected to the tool body 11.

The tool body 11 is constructed such that the body casing 12 and the grip casing 16 are connected at substantially right angles. Inside the body casing 12, a tapping cylinder is disposed, and in this tapping cylinder, a tapping piston is slidably accommodated. At the lower surface of the tapping piston, a driver 21 for striking the fastener 41 is provided in combination, and when the tapping piston is actuated, the fastener 41 can be struck by the driver 21.

At the lower tip end of the body casing 12, a nose portion 13 for ejecting the fastener 41 is provided, and the driver 21 is slidably guided in the direction of the nose portion 13.

Further, as shown in Fig. 2, a supply path 13a for supplying the fastener 41 to the nose portion 13 is provided behind the nose portion 13. The supply path 13a communicates with the inside of the magazine 19, and the fastener that has been pulled out from the side of the magazine 19 is supplied to the nose 13 through the supply path 13a. Further, a fastener is housed in the magazine 19, and the fastener is connected to the plurality of fasteners 41 by a connecting material to be wound into a coil shape.

Further, as shown in Fig. 2, the supply path 13a is provided with a fastener supply mechanism having the feed member 20 for sequentially supplying the fastener 41 to the nose portion 13. The feeding member 20 of the fastener supply mechanism performs a forward and backward movement in conjunction with the striking action, and uses the feeding claws 34 for grasping the shaft portion 41b of the feeding fastener 41 to sequentially supply the buckles in the magazine 19 The feeding action of the piece 41 into the nose 13 is performed. Thereby, the feeding operation of the feeding member 20 and the fasteners 41 arranged along the supply path 13a are sequentially supplied to the knocking-out position of the nose portion 13.

A slightly cylindrical contact nose 14 is disposed at the tip end of the nose portion 13, and the contact nose 14 is disposed to be movable up and down with respect to the nose portion 13 to be pressed against the struck member 40. This contact nose 14 is slidably mounted to the tip end of the nose 13. The contact nose 14 is coupled to the contact arm of the safety device constituting the fastener tapping tool 10, and when the contact nose 14 is pressed against the struck member 40 to slide, the contact arm is integrally moved upward. By the upward movement of the contact arm, the operation of the trigger 17 becomes effective.

Specifically, in the state of pressing against the contact nose 14 to the struck material 40, when the trigger 17 is operated (or, when the trigger 17 is operated, when the contact nose 14 is pressed against the struck material 40) The compressed air supplied from the air supply source of the air compressor or the like connected to the end cover portion 18 at the rear end of the grip case 16 is supplied into the knocking cylinder, and the compressed air is applied to the striking piston to be driven. The driver is struck, and the driver 21, which is coupled to the tapping piston, taps the leading fastener 41.

At this time, the leading end fastener 41 is cut away from the connecting material, and is knocked out from the ejection opening 15 of the nose portion 13, but the posture when the borrowing member supply mechanism is induced in the ejection path 13b is not maintained because It is inclined while being cut off, so that the toe or the head contacts the inner peripheral wall of the ejection path 13b while changing the posture The potential side was knocked out. In addition, when the normal feed operation is not performed for some reason, the toe of the fastener 41 does not face the injection path 13b, and the direction of the grip may be knocked out. Therefore, it is provided in the opening of the supply path 13a. The lower side is used to induce the toe portion of the fastener 41 to the pushing-out path 13b, or the cylindrical portion having no opening, and the tip end of the fastener 41 is always induced to the ejection path 13b.

Further, similarly to the ejection path 13b of the nose portion 13, the fastener 41 is stably guided by the contact path inside the nose 14, and is knocked out by the ejection opening 15 which is open to the tip end of the nose 14. That is, the substantially cylindrical contact nose 14 has an inner diameter S2 which is substantially the same as the inner diameter S1 of the injection path 13b of the nose portion 13 as shown in Figs. 10(a) and 10(b). It is formed to guide the posture of the fastener 41 while protruding at the time of striking the fastener 41 to contact the struck material 40, and the fastener 41 is knocked out from the tip end ejection opening 15. Therefore, even in the state in which the nose 13 is floating due to the reaction force at the time of tapping or the tapping depth is adjusted (when the gap S3 shown in the figure 10(b) exists), until the end of the tapping, The posture of the guide member 41 is guided. That is, even when the fastener 41 having a small head diameter and a small diameter and a short length is used, the inclination angle of the fastener 41 in the contact nose 14 is not after the ejection path 13b from the nose portion 13 is knocked out. It will become larger, so the frequency of bending can be suppressed.

Further, when the contact nose 14 as in the present embodiment is not provided, as shown in Figs. 10(c) and 10(d), the inner diameter S2' of the contact member 100 becomes larger than the ejection path 13b of the nose portion 13. The inner diameter S1' is even larger. Therefore, when the nose portion 13 floats due to the reaction force at the time of tapping, or the adjustment of the tapping depth or the like, a gap S3' is generated between the nose portion 13 and the struck material 40, where the gap S3' In the part, the posture of the fastener 41 cannot be guided. Therefore, the inclination angle of the fastener 41 in the contact nose 14 may become large.

As shown in Fig. 3, in the inner circumference 14a of the contact nose 14 of the present embodiment, a guide portion for inducing the toe of the fastener 41 has a guide groove 14b disposed along the knocking direction of the fastener 41. . By the guide groove 14b, as shown in Fig. 5 and the like, the cross-sectional shape of the injection path 13b is non-circular, in other words, by the difference in the cross-sectional shape of the exit path 13b, the distance from the center is different. The wire is formed with a guiding groove 14b. Further, in the present embodiment, the guide portion is formed by the guide groove 14b. However, the present invention is not limited to this aspect, and the distance from the center may be different in the cross-sectional shape of the injection path 13b. The outline is formed to form a guide. For example, the cross-sectional shape of the emission path 13b may be a polygonal shape, or the cross-sectional shape of the emission path 13b may be a circular missing side. In this way, even when the corner portion is formed into a corner portion, the guide portion can be formed at the corner portion.

Moreover, this guide groove 14b is formed on the inner side of the opposite side from the grip. Further, as shown in Fig. 4, the guide groove 14b is formed in an expanded shape by the introduction portion 14c formed at the beginning end of the guide groove 14b, so that it is easier to pick up the fastener 41 and the side of the ejection opening 15 The straight portion 14d has a shape that is narrower than the introduction portion 14c.

By providing such a guiding groove 14b, as shown in Figs. 5 and 6, the toe of the fastener 41 emitted from the nose portion 13 is induced by the guiding groove 14b, so that the contact can be suppressed more than the former. The swing of the fastener 41 in the nose 14 stabilizes the tapping posture.

Moreover, the guiding groove 14b is controlled after being struck by the driver 21. Since the fastener 41 is in the posture of the fastener 41, it is only necessary to have the guide groove 14b at the distal end side than the tip end of the fastener 41 that is supplied to the injection path 13b before being struck. In other words, the guide groove 14b may be provided on the front end side of the opening portion of the supply path 13a of the fastener 41.

Moreover, in order to control the swing of the toe of the fastener 41 to stabilize the posture, the toe of the fastener 41 that swings left and right can be captured at the time of tapping, so that it is not necessary to continue to the ejection opening 15 to form the guiding groove. 14b. It is also possible, for example, to provide the guiding groove 14b only in the nose 13 and the guiding groove 14b in the contact nose 14.

As shown in Fig. 5, when the supply path 13a connected to the nose portion 13 for supplying the fastener 41 is arranged to be offset with respect to the center position O of the injection path 13b, the toe of the fastener 41 Since the toe of the fastener 41 is easily contacted with the inner peripheral surface of the injection path 13b, the toe posture of the fastener 41 is difficult to stabilize. However, as shown in the present embodiment, when the guide groove 14b is provided, after the inner peripheral surface of the injection path 13b is contacted, the toe of the fastener 41 that moves along the inner peripheral surface can be guided by the guide groove. 14b captures, so the posture of the fastener 41 can be stabilized.

Further, in the present embodiment, the guide groove 14b is formed on the inner surface on the opposite side from the grip, so that the toe of the fastener 41 is viewed from the grip and is caught on the opposite side, and the fastener 41 is The head 41a is knocked out in a posture inclined to the grip side. The fastener tapping tool 10 is a reaction force when knocking out, and is viewed from the grip, and the opposite side is tilted to the lifting direction. Therefore, in the case of this configuration, the fastener is tilted to the side of the grip to be knocked out. 41, the head portion 41a is pressed by the contact nose 14, whereby the axis of the fastener 41 is nearly perpendicular to the struck surface, and is summarized. Hit vertically.

Further, the guide groove 14b (the linear portion 14d in the detailed description) of the present embodiment is smaller than the diameter of the head portion 41a of the fastener 41 (the maximum diameter of the head portion 41a of the fastener 41 that can be used). W (refer to Fig. 4) is formed, so that the head portion 41a of the fastener 41 does not enter the guide groove 14b, and therefore, the guiding performance of the inner peripheral surface of the contact nose 14 is not lowered, and the fastener 41 can be surely guided. The head 41a can stably contact the posture of the fastener 41 in the nose 14.

Further, the guide groove 14b of the present embodiment has a depth D which is shallower than the diameter of the shaft portion 41b of the fastener 41 (the maximum diameter of the shaft portion 41b of the fastener 41 that can be used) (refer to Fig. 5). The formation is such that the shaft portion 41b of the fastener 41 does not excessively enter the guide groove 14b, and does not greatly affect the performance of restricting the inclination of the fastener 41.

Further, the shape of the guide groove 14b is not limited to the above embodiment.

For example, as shown in Fig. 7(a), the guide groove 14b may not be provided in the push-out portion of the contact nose 14, but the guide groove 14b may be provided only in the straight portion of the contact nose 14.

For example, as shown in Fig. 7(b), the guide groove 14b may not be provided in the vicinity of the ejection opening 15, and the guiding groove 14b may be provided on the grip side.

For example, as shown in Fig. 7(c), the guide groove 14b may be provided only in the vicinity of the ejection opening 15.

Further, as shown in Fig. 7(d), the guiding groove 14b may be inclined with respect to the knocking direction of the fastener 41. According to this configuration, as shown in Fig. 8, even when the feed path 13a is offset, the fastener 41 When the toe is knocked out while being rotated in the oblique direction, the toe of the fastener 41 can be smoothly guided along the rotation direction of the fastener 41, so that the direction of the toe can be stabilized. Further, when the guide groove 14b is inclined, as shown in Figs. 7(d) and 8, it is preferable that the upper end of the guide groove 14b (opposite side of the ejection opening 15) is shifted to the supply path 13a. On the side of the offset, the lower end of the guide groove 14b (on the side of the ejection opening 15) is located on the opposite side of the grip. If so formed, the fastener 41 can be induced without violating the rotation direction of the fastener 41, and the toe of the fastener 41 at the time of ejection is in the opposite direction from the grip, and the head is tilted to the grip side. In the state of being guided, the fastener hitting tool 10 is tilted to the lifting direction by the reaction force when knocking out, so that the axis of the fastener 41 is pressed relative to the The knocking surface is nearly vertical, so that the inclination of the fastener 41 can be absorbed to strike the fastener 41 substantially vertically.

Further, as shown in Fig. 7(e), the guide groove 14b which is continuously reduced from the upper portion to the lower side may be provided. Further, the cross section of the inner circumference 14a in the vicinity of the ejection opening 15 may be slightly rounded.

Further, as shown in Fig. 7(f), a guide groove 14b which is continuously narrowed from the upper portion to the lower side may be provided.

Further, the cross section of the guide groove 14b is not limited to the above embodiment, and may be a semicircular shape as shown in Fig. 7(g), or may be a four-corner groove shape as shown in Fig. 7(h). It may be a triangular groove as shown in Fig. 7(i), or a wide groove as shown in Fig. 7(j).

Further, as shown in Figs. 7(k) and 7(l), the number of the guide grooves 14b is not limited to one, and may be approximated when viewed in the circumferential direction of the inner circumference 14a of the emission path 13b. (offset when viewed in the circumferential direction Position), a plurality of guiding grooves 14b are provided. Thereby, when the toe of the fastener 41 is knocked out while being rotated, even if the first guide groove 14b does not catch the toe of the fastener 41 by the impact of the fastener member 10, etc., the next one can be borrowed ( Article 2) The guiding groove 14b catches the toe of the fastener 41 to be surely guided, so that the direction of the toe can be stabilized.

Further, as shown in Fig. 7(m), the inner circumference 14a of the emission path 13b may be formed, for example, a plurality of grooves having different sizes or shapes may be provided, so that at least one of them is deeper than the other grooves. The guide groove 14b having the function of capturing the toe of the fastener 41 is provided when the toe of the fastener 41 enters along the inner peripheral surface. At this time, even if the small groove cannot catch the toe of the fastener 41, the swing of the toe can be suppressed by the resistance. Further, it is also expected to obtain the effect of the discharge path as a foreign matter or the like.

Further, in the above embodiment, the fastener hitting tool 10 having the contact nose 14 has been described as an example. However, the present invention is not limited thereto, and may be a fastener hitting without the contact nose 14. Tool 10. When it is not provided with the fastener tapping tool 10 that contacts the nose 14, it is only necessary to provide the guide portion to the nose portion 13 which is integrally provided on the tool body 11. It is also possible to provide the guide portion 14b, for example, in the nose portion 13 shown in Figs. 11 to 13 .

Further, in the example shown in Figs. 11 to 13 , on one side surface of the injection path 13b, an opening for allowing the connected fastener 41 to be received in the emission path 13b is formed, which is continuous with one side of the opening. The fixed guide wall 30 extending in the rear side and the door member 31 which is pivotally supported by the oppositely fixed guide wall 30 are formed with a supply path 13a for guiding the fastener 41 up to the injection path 13b.

Further, a nail body supply mechanism 32 is disposed on the back side of the fixed guide wall 30, and the nail body supply mechanism 32 is composed of a feed piston and a piston and a cylinder mechanism that accommodates the feed piston. The feed piston system is slidable along the supply path 13a, and a feed claw 34 is attached to the tip end of the piston rod 33. The feed claws 34 pass through the window hole 30a formed in the fixed guide wall 30, enter and exit the supply path 13a, and are reciprocated along the supply path 13a. By the reciprocation of the feed claw 34, the fastener 41 in the supply path 13a is sequentially supplied to the injection path 13b.

As shown in the nose portions shown in Figs. 11 to 13 , the supply path 13a of the fastener 41 is disposed to be displaced with respect to the center position of the injection path 13b (the supply path 13a of the fastener 41). In the structure in which the center O is offset with respect to the center line of the injection path 13b, the toe of the fastener 41 easily contacts the inner peripheral surface of the injection path 13b, and the striking posture is difficult to stabilize, so the guide portion 14b The effect of easily stabilizing the posture of the fastener 41 is as described above.

Further, the guide portion of the present embodiment is preferably a fastener hitting tool 10 that is wound into a coil-shaped connecting fastener. In other words, in the tapping tool using the connecting nail (i.e., the nail stud) of the linear connecting fastener, the necessity of the guiding portion of the present embodiment is low. The reason for this is that in the connecting nail, the leading fastener is guided by the adjacent fastener, so that a certain degree of inclination can be suppressed without providing a guiding mechanism for controlling the posture. In addition, when a tapping tool of a coil-shaped connecting fastener is used, it is difficult to knock out in a state in which the posture of the fastener is controlled, so that a cylindrical portion is provided at the tip end portion of the nose to restrict the knocking out. The inclination of the fastener is provided, but by providing the guide groove (portion) 14b in the cylindrical portion, the posture of the fastener 41 can be more surely controlled.

Moreover, the present invention can be made to have the following configuration in order to solve the above problems.

[1] A fastener tapping tool which is provided with a contact nose slidably at a tip end of a nose for a fastener knocking, wherein the contact nose is substantially equal to an inner diameter of the nose portion The diameter is formed to guide the posture of the fastener, and at the same time, when the fastener is struck, it protrudes more than the nose to contact the struck material, and the fastener is knocked out from the tip of the tip, in the contact nose The inner circumference, one of the toe guiding grooves for guiding the fastener, is disposed along the knocking direction of the fastener.

[2] The fastener tapping tool according to [1], wherein the guide portion is formed on the inner surface on the opposite side from the grip.

[3] The fastener tapping tool according to [1] or [2], wherein the guiding groove has a structure width smaller than a diameter of a head of the fastener.

[4] The fastener tapping tool according to [1] to [3], wherein the guiding groove is formed to be shallower than a diameter of a shaft portion of the fastener.

[5] The fastener tapping tool according to [1] to [4], wherein a supply path for supplying a fastener is connected to the nose portion, and a center position of the supply path with respect to the ejection port is It is configured to be offset, and the aforementioned guiding groove is configured to be inclined with respect to the knocking direction of the fastener.

[6] A fastener tapping tool which is provided with a contact nose slidably at a tip end of a nose for a fastener knocking, wherein the contact nose is substantially equal to an inner diameter of the nose portion The diameter is formed to guide the posture of the fastener, and at the same time, when the fastener is struck, it is protruded more than the nose to contact the struck material, and the fastener is knocked out from the tip of the exit. In the inner circumference of the contact nose, a plurality of guiding grooves for guiding the toe of the fastener are arranged along the knocking direction of the fastener, and the guiding grooves of the plurality of strips are disposed in contact with each other. The circumferential direction of the inner circumference of the nose is close to the position.

[7] A fastener tapping tool, which is provided with a contact nose slidably at a tip end of a nose for a fastener knocking, wherein the contact nose is substantially equal to an inner diameter of the nose portion The diameter is formed to guide the posture of the fastener, and at the same time, when the fastener is struck, it protrudes more than the nose to contact the struck material, and the fastener is knocked out from the tip of the tip, in the contact nose The inner circumference, the guiding groove for guiding the toe of the fastener, and the second groove shallower than the guiding groove are disposed along the knocking direction of the fastener.

13‧‧‧Nose

14‧‧‧Contact nose

14b‧‧‧ guiding groove

21‧‧‧ Drive

40‧‧‧Knocked timber

41‧‧‧fasteners

41a‧‧‧ head

41b‧‧‧Axis

Claims (9)

A fastener tapping tool for projecting a fastener from an exit path provided at a tip end of a tool body, wherein: in the inside of the injection path, a guiding portion for inducing a fastener is struck along the fastener In the outward direction, the guiding portion is provided with a contour line having a different distance from a center of the emission path in a cross-sectional shape of the emission path. The fastener tapping tool of claim 1, wherein the guiding portion is formed on the inner side of the opposite side from the grip. The fastener tapping tool of claim 1 or 2, wherein the guiding portion is formed by a guiding groove. The fastener tapping tool of claim 3, wherein the guiding groove has a width smaller than a diameter of a head of the fastener. The fastener tapping tool of claim 3, wherein the guiding groove is formed to be shallower than the diameter of the shaft portion of the fastener. The fastener tapping tool of claim 3, wherein the fastener has a second groove that is shallower than the guiding groove. The fastener tapping tool according to claim 1 or 2, wherein a supply path for supplying a fastener is connected to the injection path, and the supply path is disposed with respect to a center position of the injection path. Into an offset. The fastener tapping tool of claim 1 or 2, wherein the guiding portion is formed in a fastener that is supplied to the aforementioned ejection path The tip is also near the tip of the aforementioned tool body. The fastener tapping tool according to claim 1 or 2, wherein a supply path for supplying a fastener is connected to the injection path, and the guide portion is formed closer to the aforementioned supply path than the supply path Near the tip of the tool body.